body {
  margin: 0;
  padding: 0;
}

.flex {
  display: flex;
}

.flex_j_a {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex_a {
  display: flex;
  align-items: center;
}

.flex_s {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.l_float {
  float: left;
}

.text_color {
  color: #919398;
}

.text_color2 {
  color: #000;
}

.magin_r_5 {
  margin-right: 5px;
}

.magin_l_5 {
  margin-left: 5px;
}

.cursor {
  cursor: pointer;
}

.f_24 {
  font-size: 24px;
}

.f_16 {
  font-size: 16px;
}
.f_12 {
  font-size: 12px;
}
